US 12,227,373 B2
Article transport vehicle, rail assembly, and article transport system including the same
Wan Hee Jeong, Hwaseong-si (KR); Kuk Saeng Kim, Yongin-si (KR); Do Youn Lim, Hwaseong-si (KR); and Noh Hoon Myoung, Seoul (KR)
Assigned to SEMES CO., LTD., Cheonan-si (KR)
Filed by SEMES CO., LTD., Cheonan-si (KR)
Filed on Dec. 29, 2022, as Appl. No. 18/090,513.
Claims priority of application No. 10-2021-0192607 (KR), filed on Dec. 30, 2021.
Prior Publication US 2023/0211966 A1, Jul. 6, 2023
Int. Cl. B65G 54/02 (2006.01); H01L 21/677 (2006.01)
CPC B65G 54/02 (2013.01) [H01L 21/67709 (2013.01); H01L 21/67724 (2013.01); H01L 21/67727 (2013.01); H01L 21/67733 (2013.01); B65G 2201/0297 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An article transport vehicle that conveys an article between manufacturing facilities along a rail of an article transport system in a manufacturing plant, the article transport vehicle comprising:
an article holder including a space in which the article is accommodated;
a vehicle body including:
a base plate rotatably coupled to the article holder; and
a first side bar erected from an upper surface of the base plate and including a vertical bar extending in a vertical direction perpendicular to an upper surface of the base plate and a horizontal bar extending in a horizontal direction parallel to the upper surface of the base plate outwardly from an upper end of the vertical bar;
a magnetic levitation actuator installed at the base plate and including:
a first horizontal magnetic levitation actuator attached at a side surface of the base plate; and
a second horizontal magnetic levitation actuator attached at the upper surface of the base plate and disposed at a region defined by the vertical bar, the horizontal bar, and the upper surface of the base plate; and
a linear motor coil installed at a side surface of the horizontal bar of the vehicle body.